| 负载TiO_2浮石对污水处理厂二沉池出水的矿化与灭菌研究 |
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| 引用本文： | 郑勋超,赵玲,尹平河,黄凤.负载TiO_2浮石对污水处理厂二沉池出水的矿化与灭菌研究[J].环境工程学报,2009,3(1). |
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| 作者姓名： | 郑勋超 赵玲 尹平河 黄凤 |
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| 作者单位： | 暨南大学环境工程系,广州,510632 |
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| 基金项目： | 广东省自然科学基金重点项目，广东省教育厅学科建设重点项目 |
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| 摘 要： | 城市污水处理厂第二沉淀池出水的污染物浓度较低,经过矿化及灭菌等深度处理后可以同用,从而减轻对淡水资源的需求.本实验采用溶胶-凝胶法制备了负载TiO2的浮石光催化剂,对城市污水处理厂第二沉淀池出水进行了矿化及灭菌处理研究.采用低压汞灯对处理水样照射2 h,有机物降解率可以达到50%,灭菌效率达到100%.处理后的水可以作为农作物灌溉、城市绿化和娱乐用水.负载在浮石表面的TiO2薄膜经过10次的光催化循环实验后,没有明显破损,可以再次循环使用.TiO2浮石具有质轻、机械性能好和价格低等优点,该方法处理废水的适用浓度低,可以广泛应用于微污染水和城市污水处理厂出水的深度处理.
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| 关 键 词： | 光催化 负载TiO2 浮石 矿化 灭菌 污水回用 |
TiO_2 pumice mineralization and disinfection of treated wastewater from sewage treatment plants |
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| Zheng Xunchao,Zhao Ling,Yin Pinghe,Huang Feng.TiO_2 pumice mineralization and disinfection of treated wastewater from sewage treatment plants[J].Techniques and Equipment for Environmental Pollution Control,2009,3(1). |
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| Authors: | Zheng Xunchao Zhao Ling Yin Pinghe Huang Feng |
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| Institution: | Department of Environmental Engineering;Jinan University;Guangzhou 510632 |
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| Abstract: | The treated wastewater from sewage treatment plants can not be reused because it contains organic pollutants and pathogen.TiO2 pumices were prepared by Sol-Gel method,which were used as a catalyst for disinfection and mineralization of the treated wastewater from sewage treatment plants.The reduction rate of TOC in the treated wastewater is almost 50% and the sterilization rate is 100% when using TiO2 pumices.After using ten times,the TiO2 films on the pumices are almost undiminished.TiO2 pumices have a gre... |
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| Keywords: | photocatalysis TiO2 pumice mineralization disinfection wastewater reuse |
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